So the wife and I are sat in the local pub-come-restaurant having tea and getting ready to do the pub quiz.
There's a table of six next to us- mum, dad plus two lads and two girls in their early twenties (presumably sons/daughters/boyfriends/girlfriends).
One lad says "what I want to know is, how come you can breath under water when you're born, but can't when you're older?
Mum replies "well, you get used to breathing air"
